<template>
  <Dialog :title="dialogTitle" v-model="dialogVisible">
    <el-form
      ref="formRef"
      :model="formData"
      :rules="formRules"
      label-width="100px"
      v-loading="formLoading"
    >
      <el-form-item label="网格名称" prop="name">
        <el-input v-model="formData.name" placeholder="请输入网格名称" />
      </el-form-item>
      <el-form-item label="省份" prop="provinceId">
        <!-- 省 -->
        <el-select
          placeholder="请选择省份"
          v-model="formData.provinceId"
          clearable
          @change="handleProvinceChange"
        >
          <el-option
            v-for="item in areaData.province"
            :key="item.id"
            :label="item.name"
            :value="item.id"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="城市" prop="cityId">
        <!-- 市 -->
        <el-select
          placeholder="请选择城市"
          :disabled="!formData.provinceId"
          v-model="formData.cityId"
          clearable
          @change="handleCityChange"
        >
        <el-option
            v-for="item in areaData.city"
            :key="item.id"
            :label="item.name"
            :value="item.id"
          />
        </el-select>
      </el-form-item>
    </el-form>
    <template #footer>
      <el-button @click="submitForm" type="primary" :disabled="formLoading">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>
<script setup lang="ts">
import { GridApi, GridVO } from '@/api/envir/grid'
import * as AreaApi from '@/api/system/area'


// 定义数据类型
export interface areaType {
  id: number
  name: string
  children?: areaType[]
}

// 地区的数据
const areaList = ref<areaType[]>([])
const areaData = reactive({
  province: [] as areaType[],
  city: [] as areaType[]
})
/**
 * 获得数据列表
 */
const getAreaTree = async () => {
  areaList.value = await AreaApi.getAreaTree()
  // console.log('areaList:',areaList.value);
  areaData.province = areaList.value.map(item=>({
    id:item.id,
    name:item.name,
    children:item.children
  }))
}

areaData.city = computed(()=>{
  return areaData.province.find(item=> item.id === formData.value.provinceId)?.children || []
}) as any

const handleProvinceChange = (val) => {
  formData.value.provinceName = areaData.province.find(item=> item.id === val)?.name || ''
  formData.value.cityId = undefined
  formData.value.cityName = ''
}

const handleCityChange = (val) => {
  formData.value.cityName = areaData.city.find(item=> item.id === val)?.name || ''
}



/** 网格 表单 */
defineOptions({ name: 'GridForm' })

const { t } = useI18n() // 国际化
const message = useMessage() // 消息弹窗

const dialogVisible = ref(false) // 弹窗的是否展示
const dialogTitle = ref('') // 弹窗的标题
const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
const formType = ref('') // 表单的类型：create - 新增；update - 修改
const formData = ref({
  id: undefined,
  name: undefined,
  provinceId: undefined,
  provinceName: '',
  cityId: undefined,
  cityName: ''
})
const formRules = reactive({
  name: [{ required: true, message: '网格名称不能为空', trigger: 'blur' }],
  provinceId: [{ required: true, message: '省份不能为空', trigger: 'blur' }],
  cityId: [{ required: true, message: '城市不能为空', trigger: 'blur' }]
})
const formRef = ref() // 表单 Ref

/** 打开弹窗 */
const open = async (type: string, id?: number) => {
  dialogVisible.value = true
  dialogTitle.value = t('action.' + type)
  formType.value = type
  resetForm()
  // 获取地区
  await getAreaTree()
  // 修改时，设置数据
  if (id) {
    formLoading.value = true
    try {
      formData.value = await GridApi.getGrid(id)
    } finally {
      formLoading.value = false
    }
  }
}
defineExpose({ open }) // 提供 open 方法，用于打开弹窗

/** 提交表单 */
const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
const submitForm = async () => {
  // 校验表单
  await formRef.value.validate()
  // 提交请求
  formLoading.value = true
  try {
    const data = formData.value as unknown as GridVO
    if (formType.value === 'create') {
      await GridApi.createGrid(data)
      message.success(t('common.createSuccess'))
    } else {
      await GridApi.updateGrid(data)
      message.success(t('common.updateSuccess'))
    }
    dialogVisible.value = false
    // 发送操作成功的事件
    emit('success')
  } finally {
    formLoading.value = false
  }
}

/** 重置表单 */
const resetForm = () => {
  formData.value = {
    id: undefined,
    name: undefined,
    provinceId: undefined,
    provinceName: '',
    cityId: undefined,
    cityName: ''
  }
  formRef.value?.resetFields()
}






</script>